Synthesis and structural characterisation of the Li ion conducting garnet-related systems, Li6ALa2Nb2O12 (A = Ca, Sr)

被引：40

作者：

Percival, J. ^{[1
]}

Apperley, D. ^{[2
]}

Slater, P. R. ^{[1
]}

机构：

[1] Univ Surrey, Guildford GU2 7XH, Surrey, England

[2] Univ Durham, Dept Chem, Durham DH1 3LE, England

来源：

SOLID STATE IONICS | 2008年 / 179卷 / 27-32期

基金：

英国工程与自然科学研究理事会;

关键词：

Li ion conduction; neutron diffraction; garnet;

D O I：

10.1016/j.ssi.2008.01.047

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper we report structural data for the Li ion conducting garnet-related systems, Li(6)ALa(2)Nb(2)O(12) (A= Ca, Sr). For both systems, the cell is cubic, space group Ia-3d, with the Li ions located in two partially occupied crystallographic sites, Li1 and Li2. High temperature studies for the A= Sr system show an increased occupancy of the Li2 site at higher temperatures. Both samples have high Li ion conductivity in agreement with previous results, and quenching the samples from elevated temperatures leads to an enhancement in the room temperature conductivity, which may be related to either increased occupancy of the Li2 site or reduced Li ion defect clustering/alkaline earth dopant-defect association in the quenched sample. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：1693 / 1696

页数：4

共 21 条

[1] ION TRAPPING AND ITS EFFECT ON THE CONDUCTIVITY OF LISICON AND OTHER SOLID ELECTROLYTES [J].